Little Andrus Lake
Cass County, Minnesota27 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Little Andrus Lake. Here is what has been measured.
- 37 ft max depth
- Public access
- Limited data
Little Andrus Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 13 ft visibility. Maximum depth: 37 ft. Surface area: 27.21 acres.
Minnesota DNR's Targeted Survey on October 6, 2014 caught 4.10 brook trout per trap net at Little Andrus Lake. Length samples in the latest survey that recorded them ran 9–17 inches. DNR survey details →
Little Andrus Lake is a 27-acre lake in Cass County, Minnesota with a maximum depth of 37 feet (14-foot average). Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2020-09-02. Methodology: how these readings are compared.
What Little Andrus Lake is good for
From access and monitoring records, not editorial picks.
- Clear water13 ft of visibility
- Deep water37 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Little Andrus Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Little Andrus Lake
These are the measurements Minnesota PCA publishes for Little Andrus Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 13 ft. TSI 40.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 13ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 40 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Little Andrus Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Targeted Survey on October 6, 2014 caught 4.10 brook trout per trap net at Little Andrus Lake. Length samples in the latest survey that recorded them ran 9–17 inches.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Little Andrus Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
15 surveys on file from MN DNR Fisheries. Most recent: 2022-08-18 (Targeted Survey).
15 surveys on file · most recent 2022-08-18 (Targeted Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Fathead Minnow | 246.67 | ||
| Brook Trout | 6.37 | 9–17 in 2014-10-06 | 0.66 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Brook Trout
From the 2022-08-18 survey
Snowshoe (Little Andrus) Lake is a designated stream trout lake that is managed for Brook Trout. The dissolved oxygen and temperature profiles were measured in August 2022 to monitor habitat for trout. Optimal thermal and oxygen conditions for Brook Trout (10-16°C [50-61°F] and greater than or equal to 5 ppm DO)…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Little Andrus Lake. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — Little AndrusFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Little Andrus (1145)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — Little AndrusFish Stocking History · MN DNR LakeFinder
Lake Details
Max depth
37 ft
Average depth
14 ft
Surface area
27 acres
Shoreline
1 mi
Littoral zone
51%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
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Fishing Little Andrus Lake
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Frequently asked questions about Little Andrus Lake
Where is Little Andrus Lake?
- Little Andrus Lake is a lake in Cass County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Little Andrus Lake?
- Little Andrus Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 13 ft visibility. Maximum depth: 37 ft. Surface area: 27.21 acres.
Is Little Andrus Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Little Andrus Lake?
- Little Andrus Lake has a maximum depth of 37 feet and an average depth of 14 feet. The lake covers 27.21 acres.
What did the DNR fisheries survey find at Little Andrus Lake?
- Minnesota DNR's Targeted Survey on October 6, 2014 caught 4.10 brook trout per trap net at Little Andrus Lake. Length samples in the latest survey that recorded them ran 9–17 inches. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Little Andrus Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Little Andrus Lake?
- Public access to Little Andrus Lake is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
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Where this data comes from
8 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA8 samples · 2020
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Lake details from Minnesota DNR LakeFinder